{"id":"CVE-2026-40264","aliases":["BIT-openbao-2026-40264","GHSA-p49j-v9wc-wg57","GO-2026-5526"],"url":"https://o3.security/vulnerability/CVE-2026-40264","summary":"OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation","details":"OpenBao is an open source identity-based secrets management system. OpenBao's namespaces provide multi-tenant separation. Prior to version 2.5.3, a tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. This is addressed in v2.5.3.","published":"2026-04-21T00:47:38.156Z","modified":"2026-08-12T03:51:16.934742061Z","cvss":null,"epss":{"score":0.00301,"percentile":0.22536,"asOf":"2026-08-13"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/openbao/openbao","fixedVersion":"0.0.0-20260420162526-f58111d2ca54"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40264.json"},{"type":"ADVISORY","url":"https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40264"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:16.934742061Z"}}